feat(content-build): scaffold package + Markdown yaml-block parser

tools/content_build/tests/test_parse.py

@@ -0,0 +1,61 @@
+from pathlib import Path
+
+import pytest
+
+from content_build.errors import BuildError
+from content_build.parse import parse_bible
+
+BIBLE = """# A bible
+
+Some prose that must be ignored.
+
+```yaml
+id: town.a
+type: town
+status: canon
+secrecy: 0
+related: []
+body: >
+  Town A.
+```
+
+More prose.
+
+```yaml
+id: rumor.x
+type: rumor
+status: canon
+secrecy: 1
+related: [town.a]
+body: >
+  A rumor.
+```
+"""
+
+
+def _write(tmp_path: Path, text: str) -> Path:
+    p = tmp_path / "bible.md"
+    p.write_text(text)
+    return p
+
+
+def test_extracts_yaml_blocks_and_ignores_prose(tmp_path):
+    entries = parse_bible(_write(tmp_path, BIBLE))
+    assert [e.data["id"] for e in entries] == ["town.a", "rumor.x"]
+
+
+def test_source_carries_filename_and_line(tmp_path):
+    entries = parse_bible(_write(tmp_path, BIBLE))
+    assert entries[0].source.startswith("bible.md:")
+
+
+def test_unterminated_block_raises(tmp_path):
+    bad = "```yaml\nid: town.a\n"  # no closing fence
+    with pytest.raises(BuildError):
+        parse_bible(_write(tmp_path, bad))
+
+
+def test_non_mapping_block_raises(tmp_path):
+    bad = "```yaml\n- just\n- a\n- list\n```\n"
+    with pytest.raises(BuildError):
+        parse_bible(_write(tmp_path, bad))